Hey that's what I feel right now. It feels like my stomach is tightening and a bit Painful pressure on my Virgina and I get dizzy and it last for 4/5seconts
I felt some pressure with my son but he wasn't breech.
I m also 29 week pregnant and my situation is same as you .baby is breech and feeling more pressure on vegina. ... my obs says it ll become Normal .not to worry